♂?，，

  Lin Hong and Sun Wu connected four bamboo poles together, the length had already exceeded ten meters, then they worked together to set it up, leaning against the tree trunk. And before that, they had fixed metal wires on the surface of the bamboo pole with self-tapping screws.

  Then, Lin Hong used three plastic copper wires for the ground net and screwed them together with screws and iron sheets. The common point of these was connected to the lower end of the bamboo pole. Another wire was also separated out to connect directly through the window to the wireless radio on top.

  Sun Wu initially asked questions from time to time, but Lin Hong's responses were extremely professional terms that he couldn't understand at all. Later on, he simply didn't ask anymore and just did as Lin Hong told him.

  "Do I need to climb up?" Sun Wu asked.

  "Wait a minute." Lin Hong turned around and took out a pair of scissors from the house, "Take this with you."

  "Oh." Although he didn't understand, Sun Wu nodded and quickly climbed up, standing on one of the branches. He grabbed onto a bamboo pole with one hand, waiting for Lin Hong's next instruction. Climbing trees was nothing special for country kids like him; they often caught birds and dug out bird nests.

  "Wait for me upstairs first, I still need to adjust something."

  Lin Hong laid out the three plastic copper wires on the ground, straightened and arranged them at an angle of 120 degrees to each other, forming a temporary land net.

  Then, he quickly ran back to the room and started testing related parameters. He took out an instrument about the same size as a multimeter, with a dial on it. This instrument was a standing wave meter made by Lin Hong using a scrapped multimeter, which can be used to measure the standing wave ratio of the antenna.

  "The resonant frequency is a bit low." Lin Hong muttered to himself.

  He continued to debug and found that the standing wave was smallest at 26.00, while at 29.00, the standing wave ratio had already reached 2:1, which was quite large.

  "It seems like it needs to be cut shorter."

  Then Lin Hong poked his head out of the window and shouted at Sun Wu in the tree: "Wu, cut off five centimeters."

  "How long is five centimeters?" Sun Wu asked. He really had no concept of this length.

  "Probably about as long as a finger... an index finger."

  "Oh." Sun Wu listened and could only nod, picking up scissors to cut off a section of the metal wire bound to the bamboo pole.

  "Alright. Can I come down now?"

  Lin Hong: "Wait a little longer."

  Lin Hong returned to the front of the radio and readjusted it, later finding that the resonant frequency was still a bit low, so he had Sun Wu cut off another ten centimeters. This process was repeated three times before the optimal length was finally determined.

  "Tie the bamboo pole to the tree trunk and you can come down." Lin Hong said standing under the tree.

  Sun Wu first threw down the scissors and then tied the bamboo pole tightly to the tree trunk with nylon rope before jumping down from the tree.

  Lin Hong picked up the scissors on the ground, then took out a tape measure, measured the plastic copper wire on the ground, and cut off a section. This was not a random cut, and the remaining length was exactly one-quarter of the antenna length.

  Then, he took out a ten-centimeter-long iron nail from his pocket, tied the end of the plastic copper wire to the nail, and then hammered the nail deep into the ground with an iron hammer.

  So repetitive, the three plastic copper wires were all processed separately, and the angle between each plastic copper wire was exactly 120 degrees. These three copper wires formed the entire antenna's ground grid section.

  It wasn't until this point that the antenna was truly erected.

  Sun Wu's mission was accomplished, so he went home for dinner.

  Originally, it was also possible to make a fire and cook here, but after Old Sun moved back home, he simply stopped. He and Lin Hong went back to their respective homes for meals, and after eating, they would come back to stay here.

  Both of them are very satisfied with this life. Sun Wu is more free to live here, without his grandfather watching him every day, it's like the sky is high and the birds fly freely. As for Lin Hong, he doesn't need to say that his radio station is set up here, at night he can't sleep, naturally it's also like a fish in water.

  The next morning, Sun Wu got up and saw Lin Hong still fiddling with something on the workbench. He walked over and said:

  "Does this kid ever sleep?" He had almost never seen Lin Hong sleep.

  Lin Hong: "Insomnia, can't sleep at all."

  The term insomnia was still heard from Dr. Lin Hong.

  "Insomnia should also take a break, always like this, it's strange if one's head doesn't hurt!" Sun Wu said casually.

  Lin Hongwen looked up at him with a glance and then lowered his head to continue welding the component in his hand with an electric soldering iron.

  Although he did not express his opinion, in his heart, he was seriously considering Sun Wu's words just now.

  Maybe the reason for the headache is because I didn't rest well.

  But how can you let your brain rest and relax?

  Lin Hong was also very distressed about this matter, he had closed his eyes many times to force himself to rest, but his brain seemed to be constantly running automatically, countless contents kept "floating" in front of him, making his heart unable to calm down.

  "It's a nice day outside, why don't we go out for a walk?" Sun Wu suggested from the side, "My brother said he'd take me to a fun place today to broaden my horizons, come with me and by the way get that color TV fixed. I've been tight on cash lately... heh heh!"

  At this time, Lin Hong was just finishing the welding of the thing in his hand. He blew away the tin slag on top and then picked up the multimeter next to him to measure it. While measuring, he replied: "Wait a minute, I'll get this tuned up and we can go together."

  Yesterday, he tested the antenna's effect, and overall it was not bad. However, later on, he found that the antenna's characteristic impedance and the transceiver's characteristic impedance were still different. As a result, some of the power transmitted to the antenna would be reflected back, forming a strong standing wave. In a short period of time, there might not be any issues, but over a longer period, it could burn out the transmitter. So he stayed up all night to investigate the cause and then redesigned the matching network. The final result was this antenna tuner in his hand.

  "Good!" Sun Wu heard this and was immediately very pleased, so he waited honestly on one side.

  Lin Hong checked some parameters of the tuner and felt that it was okay, so he replaced the original tuner connected to the antenna and radio. Then he put on his headphones, turned on the radio, tuned to the 40-meter band, and soon received several amateur radios from Japan. Next, he took out the SWR meter and connected it, continuing to tune for several frequency points, finding that the standing wave had finally decreased to an acceptable range, and nodded in satisfaction.

  Sun Wu watched with a tingle in his heart, to say he wasn't tempted by Lin Hong's treasure would be a lie, but if he really had to go read those heavenly books-like technical books just for the sake of playing with it, he'd rather die. He preferred playing with ready-made, foolproof, and show-off-in-front-of-others things.

  In this regard, he really admires Lin Hong. Such a complex thing, in Lin Hong's eyes, is simply like playing, and can easily make a radio that is more powerful than those in the city stores.

  But he couldn't understand why Lin Hong was so low-key. With such a cool thing, no one told anyone, and he hid in his room every day to play alone. This is too boring, good things should be known to everyone, otherwise who would know how powerful it is?

  Sun Wu said he couldn't understand Lin Hong's abnormal thinking at all.

  ====

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